Composition of matter for building-brick



IOOI COMPOSITIONS,

COATING OR PLASTIC.

UNITED STATES -E XAMINERSI W oat {W PATENT OFFICE.

WILLIAM HENRY DUFREE, OF ELGIN, ILLINOIS.

COMPOSITION OF MA'TTER FOR BUILDING-BRICK.

SPECIFICATION forming part of Letters Patent No. 597,078, dated January 11, 1898. Application filed June 23, 1897. Serial No. 641,891. (No specimens.)

To all whom it may concern:

Be itknown that 1, WILLIAM HENRY DU- FREE, a citizen of theUnited States, residing at Elgin, in the county of Kane and State of 5 Illinois, have invented a new and useful Oomposition of Matter to be Used*for the Mannfacture of Building-Brick, of which the following is a specification.

-My composition consists of the following ingredients, combined in the following proportions stated, viz: water (for one thousand brick,) about fifty ga ons; sand forty-one cubic feet; cement Portlanflfl one and onefourth barre s' 01 0 v1 r10 one pint ammo- I hr?! 1-1- 5 nla-water two quar s; pu verlzed alum one and one-half pounds. These ingredients are to be made into a stiff mortar and placed in molds to harden. The sand and cement are to be mixed thoroughly, (dry,) then wet with the solution consisting of ammonia-water,

Ha y two quarts; pulverized alum, one and onehalf pounds; water, fifty gallons, and mixed into a stifi mortar, after which the oil of vitriol, diluted in eight gallons of water, is added.

What I claim, and desire to secure by Letters Patent of the United States, is-- The herein-described composition of matter consisting: of water, (for one thousand brick,) 

